;ModuleID = while_test.sy
source_filename = "while_test.sy"

target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
;the above is copied
define dso_local i32 @main() {
    %a = alloca i32, align 4
    %b = alloca i32, align 4

    store i32 0, i32* %b, align 4
    store i32 3, i32* %a, align 4

    br label %loop

loop:
    %1 = load i32, i32* %a, align 4
    %cmp = icmp sgt i32 %1, 0
    br i1 %cmp, label %if.body, label %if.end

if.body:
    %2 = load i32, i32* %b, align 4
    %3 = load i32, i32* %a, align 4
    %add = add nsw i32 %2, %3
    store i32 %add, i32* %b, align 4
    %4 = load i32, i32* %a, align 4
    %sub = add nsw i32 %4, -1
    store i32 %sub, i32* %a, align 4
    br label %loop

if.end:
    %5 = load i32, i32* %b, align 4
    ret i32 %5
}
; the coming code is copied
attributes #0 = { noinline nounwind optnone uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "frame-pointer"="all" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }

!llvm.module.flags = !{!0}
!llvm.ident = !{!1}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{!"clang version 10.0.1 "}